Question about 1999 Mitsubishi Mirage

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I have an oil leak between the rear of the engine and the transmission bell housing what parts do i need and how can i get a repair manuel

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Unless it's coming from the valve cover down, this is the rear main seal. Generally, you'll have to remove the starter, axle(s), linkage & transaxle, then the flywheel to expose the seal. It is mounted in an aluminum bracket that bolts to the engine around the crankshaft to hold the bearing and help to provide the proper sealing to that area. While you are there, you should consider replacing any seal in that area to prevent the need of pulling the trans again.

If you do that, you'll remove the entire bracket & be able to easily remove the rear main seal.

The seal can also be pulled out where it is if you are careful, by using a couple of sharp screws & tapping into the center of the seal, away from either edge so as not to damage the housing or the crankshaft, then pulling the seal out. I use 2 screws as a rule & predrill with a low speed drill making sure not to touch anything but the center of the "hard" area between the 2 surfaces. A bent tip on a screwdriver can also provide you with a means to pull the seal. Either works, you just have to be sure not to scratch the crank or the aluminum bracket that holds the seal.

This method eliminates the need for replacing other gaskets in that area.

Parts: Rear Main Seal (set) includes the paper seal. Consider the Trans main/input seal, you are there and the method for replacing it is very similar, pop it out & push another back in. You'll need RTV for the paper seal if you do replace it.

As far as the manual, there's more than one type & place to get them, including on-line. If you go to one of the parts stores like Autozone, they will provide you access online to vehicle specific repair info if you just take a minute to register. Pep--boys has a multitude of manuals for most vehicles.

good luck.

Posted on Feb 02, 2010

Testimonial: "the info was very helpfull and i will be doing the repairs this weekend. thanks much."

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Why would I have oil in where my flywheel is and

Give more information. What car, what year model? If there is oil where the flywheel is, chances are you have a leaking rear main bearing oil seal or leaking gear box primary shaft oil seal. Coil packs? They should be there to make the car go.

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Check that the oil leak is not engine oil coming out before the bell housing ( sump gasket) If the oil is coming out of the bell housing inspection cover then it means box put and either flywheel off for a rear main seal or torque converter out for a seal in the box or converter.. If it is a sump or rear main seal check the engine oil level first and the PCV valve operation as excessive oil level and sump pressure will cause the engine side problems that you can fix without removing the box.

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Oil leakage on Mercedes Benz 5.0L engines

oil in the bell housing can be rear main seal and it can also be input shaft seal in the gear box if manual. The sump bolts on the rear main cap and will leak next to the bell housing indicating a main seal . If auto then the seal on the converter will leak and the oil will leak out of the bell housing. If you are convinced that it is a main seal then check that there is no crankcase pressure issues to make it leak. Change the engine oil and clean the area and if the oils is clean then that will indicate engine or gear box. Put a white chalk line across any oil paths and watch for it to cross the chalk and change the chalk colour.

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Truck runs great @ 168K miles. No engine performance or power loss. But recently started leaking oil slowly from unknown location. Drips accumulate and appear below & back of engine by transmission...

Their is a front and rear oil seal on the oil pan itself..........If it is leaking by the bell housing then you will have to drop the oil pan and replace the rear oil seal and i would do the front one on the pan as well..........Hope this helps.

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When you add tran fluid it makes your oil level go up

If you mean engine oil level, impossible! If the transmission oil seal or the torque converter were leaking the oil would run out of the bell housing. There is no way it could force its way into the engine, it would have to half fill the bell housing and then get through the rear crankshaft seal.

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Seal between the Engine and Transmission is leaking. The oil is only getting into the bell housing area. If you are checking your transmission oil and it is black or brown you need a major transmission repair and fluid and filter change.

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My 1994 camaro w/ 3.4L engine has an oil leak in rear of engine. It is running down both sides of the block in rear. Oil filter is wet, but not leaking, the starter and bell housing drip oil and its...

This is most likely a leak from your rear main seal. It happens and can be a pain to replace if you're a DYI kinda person without the nec. equipment.
  1. Raise and safely support the vehicle with jackstands.
  2. Remove the transmission.
  3. If equipped with a manual transmission, remove the clutch and pressure plate.
  4. Remove the flywheel assembly.
  5. Using a suitable prytool, carefully pry the old seal out.
6. Inspect the crankshaft for nicks or burrs, correct as required.
88143g59.gif Crankshaft rear main seal - 5.7L engine

To install:
  1. Clean the area and coat the seal with engine oil. Install the seal onto tool J-34686 for 3.4L engines, J 41349 for 3.8L engines or J 35621 for 5.7L engines.
  2. Install the tool (with the seal mounted to it) onto the rear of the crankshaft. Tighten the screws snugly to be sure the seal will be installed squarely over the crankshaft.
88143g60.gif Exploded view of the rear main seal installation - 3.4L engine
Click to Enlarge

  1. Tighten the wing nut on the installation tool until it bottoms out.
  2. Remove the tool from the crankshaft or rear oil seal housing, as applicable.
88143g61.gif Rear main seal and installation tool - 3.8L engine
Click to Enlarge
88143g62.gif After position the seal on the tool, install it to the crankshaft housing

  1. Install the flywheel.
  2. If equipped with a manual transmission, install the clutch and pressure plate.
  3. Install the transmission.
  4. Check the fluid levels, start the engine and check for leaks.

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Two very likely sources for engine oil. You could have a valve cover leaking or a rear main seal. The best way to check is to trace the source of the oil. This requires a very thorough steam cleaning to remove all the old oil. Place an oil dye pack in the oil (about 3.50 at Napa and other parts stores). Run the engine for about 15 minutes and use a blacklight source and a mirror to check the back of the engine below the valve covers and closest to the firewall. Check out how the fresh oil floureces in the blacklight source by checking your dipstick for the color of the glow. If the back of the engine is dry and clean and your puddle is still glowing from between the engine and the transmission, you have a rear main seal and the transmission will need to be removed to change the seal. Spend the time on the diagnosis before you spend the money.

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